Arigid tank 0.03 m3 in volume is evacuated to very low pressure and placed in a low-temperature bath at 244 k. a quantity of 0.05 g of pure solid water (ice) is placed inside the tank. at 244 k, the entropy change between saturated water vapor and ice is 11.62 j/g/k and reported vapor pressure of ice is 42.8 n/m2. (a) calculate u, ts, a, and q for the process of ice evaporation (sublimation). what fraction of ice has evaporated at equilibrium? (b) what conclusions can you reach about the general equilibrium criterion in this case?

The most efficient way to establish the best possible economizer position is to measure

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.